Mold



' Feb. 4, 1930.

F. J. CREQUE MOLD Filed March 13, 1928 2 Sheets-Sheet l lwuemtoz .EJI' Ecan E Patented Feb; 4, I930 MOLD Application filed March 13, 1928.Serial No. 261,268.

T OFFICE FRANK J. CREQUE, OF CUYAHOGA FALLS, OHIO The present inventionis directed to imoperative position. The rings 7 and 8' comprovements inmethods for molding bushings prising the drag 7 are maintained inconcen- Figure'2 is a similar view of thecope flask and the assembly isthen inverted, after which and pattern ring.

3 is a fragmentaryplan view of the Another object of the invention is topro vide amethod wherein the pattern for forming the designs upon thebushings is formed tional view showin Figure 4 is a pattern segments.

Figure 5 is a sectional view on the line core 20 in the cope. It will beobserved that 5-5 of Figure 3.

Referring to the drawing, 1 designates a same is resting upon the flange8 of the drag cast iron bowl which is of ring form, said 7 the spacebetween the'cores 6 and 20 will bowl having an annular shoulder 2 and abe suflicientto mold bushings of proper thickterminal flange3 formedwith openings 4. It ness. The bushings thus formed are then is in thisbowl part of the mold that the masplaced in a conventional form of tiremold pattern segments 5 are engaged which for completing the moldingoperation. ave formed in their upper faces suitable de- The masterpattern segments 5 are made signs which will be impressed in the sand insections, as indicated at 21 in Figure 4, to

After the sand 11 ment upon the core 6 for sand. These segments ar Thecope 13 consists of for use in connection with molds for vehicle tricrelation by the drag bars 6.

, e as been thoroughly The primary object of the invention is to tampedthe drag and mold are inverted, and provide a method for moldingbushings used the bowl is lifted leavin in the molding of rubber'tire's,the method being such that the molded bushing will have impressedtherein any suitable design. the impression of the design thereof in thesand core, as will be obvious. The cope portion of the mold is formed byplacing the pattern ring 10, which may be formed from plurality ofsegments, which are any suitable material, upon the bottom board ormedin sections in order to facilitate the 11 and anchoring the same theretoby dowel placing or removing the same from the mold. pins 12 fixed tothe ring and removably fitted 'Another object of the invention is toproin said board. ide a method wherein the segments will be positivelymaintained in their. proper posiand 15 maintained in s tion within themold and held against disbars 16, the outermost rin lodgment during thetamping of sand therein. nular flange 17 which is k In theaccompanyingdrawings:

the pattern se fried by the tamp d e then lifted leaving concentricrings 14 paced relation by g 15 having an aneyed to the board 11 bypins18. The sand is tamped in the cope Figure 1 is a fragmentary transversesecand gated with conventional forms of horns. g the drag and ring as- Amold board 19, indicated by dotted lines in Figure 2, is then placedupon the cope 13 the pattern ring 10 is removed.

The cope 13 is then turned over and placed upon the now inverted core 6in the drag 7 plan view of the assembled and the metal poured in thehorns to be molded in the space between the core 6 and sand the ring 15is of such height that when the 'core6. These segmentsare placed in thebowl facilitate the removal thereof from the ceived in the ring drag 7which is formed with a flan openin with their outer ends abutting theshoulder bowl 1. 2, thus maintaining the same in fixed position durinHaving thus described the invention, 1 g the tamping of the sand in theclaim: orm the core 6. The sand is re- A mold of the class describedcomprising an annular bowl having a continuous shoulge 8 adapted to restupon the der therein, a pattern ,there being pins 9 engaged in therality of segments adapted to be placed gs 4 of the flange 3 andopenings 9 of transversely in the bowl with their outer nge8 to maintainthe flask and bowl in ends engaging the shoulder, said segmentsconsisting of a pluhaving designs thereon, a drag removably engaged withthe bowl, a sand core tamped in the drag and upon the segments forreceiving impressions of the designs of the segments, said drag and corebeing invertible to permit removal of the bowl and segments, a copeadapted to be placed upon the drag and having a sand core therein, thecores of the drag and cope cooperating to provide a space for receivingcasting metal.

In testimony whereof I affix my slgnatnre.

FRANK J. OREQUE. [11. 5.] 7,

